When I was a kid take this Pontiac wagon, change the red to black - call it a Laurentian, 283 4bbl 2 exhausts, premium gas, 2 speed Powerglide, towing an unpainted aluminum "ham can" about 19ft trailer, with the varnished plywood and black and white checker pattern interior, and off we went all over the Alberta and BC Rockies.
I think the 283 upshifted about 7000 rpm....
Giving my age away (I'm ancient), I had a 65 Impala SS 409 with a Powerglide. Powerglides never shifted, the 'glided' into gear. Very popular with drag racers in the 60's.
Those were the days. Backseat like a couch and drive in movies every Saturday night....
